/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    https://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */

package org.grails.cli.profile.commands.events

import groovy.transform.CompileStatic

/**
 * Stores command line events
 *
 * @author Graeme Rocher
 * @since 3.0
 */
@CompileStatic
class EventStorage {

    private static Map<String, Collection<Closure>> eventListeners = [:].withDefault { [] }

    static void registerEvent(String eventName, Closure callable) {
        if (!eventListeners[eventName].contains(callable)) {
            eventListeners[eventName] << callable
        }
    }

    static void fireEvent(Object caller, String eventName, Object...args) {
        def listeners = eventListeners[eventName]
        for (listener in listeners) {
            listener.delegate = caller
            listener.call(args)
        }
    }
}
